Variables

What is the 1st step of the Scientific Method?

• observation

• hypothesis

A natural system, housing a community of organisms in a particular living space on earth.

• system

• global earth system

• ecosystem

Tags

NGSS.MS-LS2-3

What type of feedback mechanism is described below?

As the population size of a country increases rapidly, this creates greater demand on the food supply making it inadequate (not enough) for the population size, as a result the population size decreases.

• Positive

• Negative

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What type of feedback mechanism is described below?

As the earth warms that creates more water vapor (a Greenhouse gas) from the evaporating ocean. This leads to create warms due to an increased greenhouse gas effect.

• Positive

• Negative

Tags

NGSS.MS-ESS3-5

Consider the water cycle and ignore ice volume. As rain is add to the earth, the volume of water in streams and lakes on land temporarily increases until the rain event is over and the water is flushed to the ocean where it will once again evaporate to make more rain clouds repeating the cycle.

This is an example of what?

• negative feedback mechanism

• positive feedback mechanism

• ecosystem

• dynamic equilibrium

Tags

NGSS.MS-ESS2-4

In an experiment investigating the effect of wildfire on the population of prairie flowers, this picture would represent the ________ group.

Tags

NGSS.MS-LS2-4

In an experiment investigating the effect of wildfire on the population of prairie flowers, this picture would represent the _______ group.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

From the options below, select the correct description for box "F"

• The Liquid Used to water each plant

• The condition that you change.

  1 per experiment

• The change that occurs due to the independent variable

• The type of plant used, pot size, soils type, ml of liquid, etc.

• The height or health of the plant

From the options below, select the correct description for box "E"

• The Liquid Used to water each plant

• The condition that you change.

  1 per experiment

• The change that occurs due to the independent variable

• The type of plant used, pot size, soils type, ml of liquid, etc.

• The height or health of the plant

From the options below, select the correct description for box "C"

• Every other condition that could be altered but is held constant

• The condition that you change.

  1 per experiment

• The change that occurs due to the independent variable

• The type of plant used, pot size, soils type, ml of liquid, etc.

• The height or health of the plant